1.1 Integers

• Representing integers on a number line
• Operations of addition and subtraction of integers on the number line

• identify integers in different situations
• represent integers on a number line in different situations
• carry out operations of addition and subtraction of integers on the number line in real life situations
• use IT or print resources for learning more on integers and for skills development
• reflect on use of integers in real-life situations

“Where do we use integers in real life situations?”

“How do we carry out operations of integers?”

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1. What integers are
   40 min · 1 practice tasks · quiz
   Positive whole numbers, negative whole numbers and zero, and the everyday situations where the negative ones are needed.
2. Integers on a number line
   40 min · 1 practice tasks · quiz
   Drawing a number line, plotting integers on it, and using position to decide which of two integers is greater.
3. Adding integers on a number line
   40 min · 1 practice tasks · quiz
   Treating every addition as a hop: adding a positive hops right, adding a negative hops left.
4. Subtracting integers on a number line
   40 min · 1 practice tasks · quiz
   Subtraction as a hop the other way, and why subtracting a negative sends you to the right.
5. Combined operations with integers
   40 min · 1 practice tasks · quiz
   Working a string of additions and subtractions one hop at a time, left to right, and checking the answer.
6. Integers in real life
   40 min · 1 practice tasks · quiz
   Where integers are actually used, what zero means in each case, and answering real questions with them.